Shaft-coupling.



J. NEWMANN..

I I SHAFT COUPLING.

APPLICATION FILED APR..15, 1909.

Patented Sept. 21, 1 909.

INVENTOR Wmann By WW- ATTORNEYS JOHN NEWMANN, or snooxiariv, NEW YORK.

SHAFT-COUPLiNG.

Specification of Letters Patent.

Patented Sept. 21, 1909.

Application filed April 15, 1909. Serial No. 490,012.

To all whom it may concern:

Be it known that I, JOHN NEWMANN, a citizen of the United States, and residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Shaft-Couplings, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates tomeans for coupling shafts of various kinds and classes, such as counter shafts, line shafts, machine shafts and various other. kinds or classes of rotary and other source; and the object thereof is to provide an improved coupling of this class designed for use in connecting shafts end to end, and which may be convenlently a p j at the outer ends thereof, and said suppleplied whenever desired and as easily removed for repairing or other purposes.

The invention is fully disclosed in the following specification, of which the accom- 1 panying drawin forms a part, in which the separate parts 0 my improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is asectional side view of my improved shaft coupling and showing the same in operation, Fig. 2 a side View of the main sleeve or rib of my improved coup ling, Fig. 3 a transverse section on the line 3-3 of Fig. 1, Fi 4 a transverse section on the line 4-4 of F 1g. 1, and ;Fig. 5 an end view of the sleeve shown in Fig. 2;

In the drawing forming part of this specification, I have shown at a and a two shafts to be coupled end to end, and in the prac tic e of my invention 1 provide a double conical sleeve 6, the central portion of which is provided with a collar 6 which is hexagonal in shape or of other angular form; The end'portions of the sleeve b are cylindricalin form and threaded as shown at. 6

and that portion ofsaid sleeve between the threaded ends thereof is provided with spirally arranged slots 7) one of which begins adjacent to the threaded portion atone ,end'of said sleeve as shown at b and extends through the opposite threaded end portion as shown at b and the other-of whichbegins adjacent to the other threaded end portion as shown at b and extends through the opposite threaded end'portion and the other is inserted thereinto.

as shown at b. As thus constructed, it will be seen, that the body portion of the sleeve 1) consists of spirally arranged members I) which are integrally connected at the ends and which give to said sleeve a more'or less elastic quality according to the thickness and character of the material employed in its construction. Each-screw threaded end of the sleeve 6 is provided with a not a and a set nut c, and mounted on the body portion of saidsleeve are two supplemental sleeves d. It will be observed that the opposite end or side portions of the sleeve 6 are tapered outwardly from the center thereof, and the Y supplemental sleeves of are correspondingly bored, the inner walls d thereof being correspondingly tapered so that the central bores In the adjacent ends thereof are larger than mentalsleeves are so formed as to snugly fit the end portions of the main sleeve 7). The

adjacent end portions of the supplemental sleevesb are provided with hexagonal or other annular. grooves d which correspond with and are adapted to receive the collar or ribb of the sleeve b, and the adjacent end portions of the supplemental sleeves d are also provided in the faces thereof and at the opposite sides thereof with transverse recesses d.

Inconpling the; shafts a and a the nuts 0 and. c are first placed on said shafts, the

- outer or supplemental sleeves, d are then placedon said. shafts, after which the inner or main sleeve is placed on one of said sh zi fts .he outer or supplemental sleeves d. are then movedup onto the conical end portions of the main sleeveb and the nuts 0 and c are screwed into position. I

The central bores of the supplemental sleeves d are of such transverse dimensions that said sleeves snugly fit the conical end portions of the main sleeve 6, and even when the supplemental sleeves are forced fully onto the main; sleeve 6 as shown in Fig. 1, they do not-quite come together at d, and

' they do not come in contact with the side portions or faces of the ribor collar 6 and v a in practice the threaded end ortionsort the.

main sleeve 6- are preferably s ightly tapered so that the nuts c also serve to contract the s'aid sleeve while forcing the supplemental tions of saidmain sleeve, and this pressure is exerted in compresslng the said mam sleeve and causing 1t to securely grasp and hold the shafts a and a Whenever it is desired to uncouple the shafts a and a the set nuts are first unscrewed and a wedge or wedges are driven transversely through the recesses formed by the grooves d in the adjacent end faces of the supplemental sleeves 03 and this operation forces said sleeves outwardly, and said sleeves may then be detached from the main sleeve 1), and said main sleeve may be deshaft-s withdrawn therefrom.

From the foregoing description, it will be seen, that my improved coupling is a friction coupling, the pressure of the main sleeve b on the shafts a and a serving to hold said shafts in connection and to compel one of said shafts to revolve with the other when said coupling is used on a rotary shaft-or shafts.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The herein described coupling for shafts consisting of a main inner sleeve into which the ends of the shafts are inserted, the end portions of said sleeve being threaded and the body portion thereof between the threaded end portions and the middle thereof being tapered in opposite directions, and said body portion of the sleeve between the threaded end portions thereof being also provided with spirally arranged slots, and supplemental outer sleeves adapted to be inserted onto the end portions of the main sleeve and to closely fit the same, the threaded end portions of the main sleeve being also provided with nuts.

2. The herein described coupling for shafts comprising a main inner sleeve t e end portions of which are threaded, said sleeve being also provided centrally thereof with a projecting rib or head, the body portion of said sleeve between said rib or bead'and the screwthreaded end portions bein tapered, and said body portion between sai threaded end portions bein provided with spirally arran ed slots wh1ch begin inwardl of the opposite threaded end ortions an extend through the other three ed end portions, and supplemental outer sleeves mounted on the tapered end portions of the inner sleeve and the bores of which aretapered to correspond therewith, and nuts mounted on the screw threaded end pdrtions of the main inner sleeve.

3. The herein described coupling for shafts cpmprisin a main inner sleeve the end portionsof w ich are threaded, said sleeve besleeves cl inwardly on the conical end por-- screwed, after which the nuts 0 are untached from the shafts a and a or said ing also provided centrally, thereof with a projecting rib or bead, the body portion of said sleeve between said rib or bead and the v screw threaded end portions being tapered, and said body portion between said threaded end portions being provided with spirally arranged slots which begin inwardly of the opposite threaded end portions and extend through the other threaded end portions, and supplemental outer sleeves mounted on the tapered end portions of the main inner sleeve and the bores of which are tapered to correspond therewith, and nuts mounted on the screw threaded end portions of the main inner sleeve, the inner end faces of the suppro ecting rib or bead, the body portion of said sleeve between said rib or bead and the screw threaded end portions being tapered,

and said body portion between said threaded end portions being provided with spirally arran ed slots whlch begin inwardly of the opposite threaded end portions and extend through the other threaded end portions, and supplemental outer sleeves mounted on the tapered end portions of the main inner sleeve and the bores of which are tapered to correspond therewith, and nuts mounted on the screw threaded end portions of the main inher sleeve, the inner end faces of the supplemental outer sleeves being also provided adjacent to a side thereof with transverse recesses, and said supplemental outer sleeves being also provided in their adjacent faces with annular spaces adapted to receive the central annular head or projection on the main inner sleeve. v i

5. The herein described coupling for shafts 1 comprising a main inner sleeve the end portions of which are threaded, sald sleeve being also provided centrally thereof with a pro jecting rib or head, the body ortion of said sleeve between said rib or bee and the screw threaded end portions being tapered, and' v said body portion between said threaded end portions being provided with spirally arran ed slots which begin inwardly of the opposlte threaded end portions and extend through the other threaded end portions, and

supplemental outer sleeves mounted on the tapered end portions of the main inner sleeve and the bores of which are tapered to correner sleeve, the inner end faces of the su ple:

mental outer sleeves being also provide adspond therewith, and nuts mounted on the screw threaded end portions'of the main inbeing also provided in their adjacent faces as my invention I have signed my name in with annular spaces adapted to receive the presence of the subscribing witnesses this central annular bead or projection on the 13th day of Anril, 1909. main inner sleeve, said annular bead or pro- JOHN NEWMANN. jection and said annular recesses being angu- Witnesses: let in form. H. R. GARFIELD,

In testimony that I claim the foregoing C. E. MULREANY. 

